Acetylene cutting and welding torch.



'W. W. V-ON-TODENWARTH.

ACETYLENE CUTTING AND WELDING TORCH. APPLlcAloN FILEUSEPT. 24. 1915.

A1,198,795. Patenfedsept. 19,1916.

:3 mmm/to@ WALTER W. VON TODENWARTH, OF RAHWAY, NEW JERSEY.

AGETYLENE CUTTING AND WELDING TORCH.

Specicatonof Letters Patent.' Patnted SQP, 19 1933 Application led September 24, 1915. Serial No. 52,334.

To oZZ yio/iufm it muy concern Be it lnovvn that l, VALTER YV. voN To- DBNWARTH, a citizen of the United States,

and residing at Rahway, in the county of class designed both for cutting and Weld,

ing, and the object thereof is to provide an improved device of this class which is simple in construction and operation, convenient of manipulation, and Which may be used Wherever devices of this class are required.'

The invention is fully disclosed in the folloiving specification, of which the accompanying drawing forms a part, in which the sepa-rate parts of my improvement are desig`` nated 'by suitable reference characters in each of the views, and 1n Whichz* l .Figure l `is a sectional side view of my 1m- 'proved acetylene torch When used for Welding purposes; and, Fig. 2 a sectional view` of a modified form of attachment whereby the torch is made practical as a cutting torch.

ln the practice of my invention, I provide a main torch head@ and a valve head o connected by an oxygen pipe o and an acetylene gas pipe (Z, and the acetylene gas pipe CZ is provided with a flash back tank' or flash back chamber (Z2 which forms a part thereof and is of the usual form.

The oxygen pipe c and the acetylene gas pipe (Z with the flash back tank or chamber trolled by a needle valve e, and the tube 9' and thevlash back tank or chamber Z2 are placed in communication by passages et 1n thevalve e controlled by a needle valve e5, and the valve e is the master or key valve of the device, While the supply of oxygen and acetylene gas is controlled by the needle valves e3 and e, and by means of this construction the exact amount oi' oxygen and acetylene. gas admitted to the burner or burner tip may be controlled at all times, and this valve device is a combination of the main master key valve e and the needle valves e3 and e5. v

The torch head o is of the `usual form and comprises amain outer casing a2 provided at its upper end with an elbow extension a3 with which the pipe c is connected and adjacent thereto with a threaded sleeve a* with which the piped is connected, and a tubular and tapered nozzle .7a is also provided, and this nozzle is provided with an extension ,72,2 Which tits in the head a? and with a threaded portion ,72,3 which screws into the head o2, and the nozzle is, is provided -With an interior tapered channel or passage h, the Walls of which are provided With longitudinal ribs or fins h5.

, In the head 'a2 is a chamber o5 in which is' placed a slidable sleeve z' which, is closed at its upper end and open at its lower end, and

the upper end of which. is provided With an inwardly directed nozzle 2'2, and the pipe o communicates with a passagef 3 which communicates with the nozzle-Hand the side Walls of the sleeve i are also provided with ports or' passages lt which are placed a predetermined distance below the nozzle 2, and the acetylene gas pipe d communicates with the chamber through a passage o6, Vand said sleeve z' is movable longitudinally in the chamber a? and is provided with a collar i5 between which and the part tg is placed a spring j which normally holds said sleeve in the position shown in Fig. l, and said sleeve constitutes a sliding injector into which the oxygen and acetylene gas is adj mitted from the pipes o and d, and said oxygen and acetylene gasI aremingled in the sleeve 'i and passed through the lower open end thereof into the discharge nozzle h, and the nozzle It is provided with a burner tip 7c designed for use' in Welding only, and by means of the tapered nozzle 2 the oxygen is discharged into the `sleeve vf in a spray fashion, and the acetylene being discharged into said sleeve below the'q nozzle il', a perfect mixture. is obtained.

The object in making the sleeve or sliding injector movable, as shown and described is to accommodate the device to the expansion and contraction of the parts under heat or different degrees of heat, and the sleeve z' when made movable, in the manner herein shown and described, will not be destructifely affected by the expansion and' contraction of the part ci' of the head (l. under varying degrees of heat. l

In Fig. 2, I have shown at 7a2 a modified form ot' burner tip, .intended for cutting purposes and, in practice, the burner tip is substituted for the burner tip 7e shown in Fig. 1 and a. tube m is also employed and connected with the burner 7.:2 by means of a pipe mzhaving a coupl'ng m3. The tube fmJ is also provided with a valve m4 and with a nozzle coupling having a socket m", and the head Z2 is provided with a stud mT adapted to enter the .socket m, and the coupling m5 `is provided with a flexible tube m8 which may be connected With an oxygen supply, and the object of this construction is to pro-4 vide means whereby an additional supply of oxygen may be provided when a cutting nozzle is to be used, and inthis operation the coupling m5 is connected with the stud m7 a d the burner tip 7a2 with the main nozzle 7L of the head a, the burner tip 7c having been detached.

The burner tip k2 comprises a head 7c3 having a tapered extension 7a4 with which a tip kf is connected, and the head 7c3 is adapted to be screwed onto the main nozzle 71, of the head a of the device, and the burner tip 7132 is provided with a transverse partition 706 having a passage 707 which communicates with a chamber 7:3 with which the tip 765 communicates and secured in the partition 7c is a pipe'7:9 with which the coupling pipe mi2 communicates, and the lower end of the pipe 7c is spirally grooved as shown at n, and the oxygen and acetylene gas from the pipes c and l pass through the head a and through the passage 76T into the chamber 71S, and through the spiral groove n to the burner tip, while the additional supply of oxygen furnished by the pipe m passes through the pipe ff, and the composition thus formed otl oxygen and acetylene are discharged through the burner or cutting tip 7e", and the additional supply of oxygen through the pipe 769. -v

By means of my improvement, I provide a device of the class described which may be used as a welder whenever desired and as a cutter whenever necessary, all that is necessary to change the device from a Welder to a cutter being to detach the burner nect thefcouplingl mf with the stud mi as `indicated in dotted lilies in Fig. 1. the-latter merely serving` as means -ior supporting the pipe m. and my invention is not limited to this method ot' supporting said pipe. and changes in and modifications ot' the various details oi' construction herein shown and described may be made within the scope ot' the appended claims without departing from the spirit ot' my invention or sacrificing its advantages. .i

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

l. Ina device of the class described, a torch head, a spring controlled sleeve injector mounted in and movable longitudinally of the top portion of said torch head and having an inwardly directed nozzle in the top thereof, the bottom ot' said injector being open, said injector being also provided below the nozzler in the top thereof with ports or passages, and means for introducing oxygen through said nozzle and acetylene through said ports or passages into said injector whereby a mixture otl said oxygen andv acetylene is obtained in said injector, and said torch head being also provided with a detachable discharge nozzle having a detachable burner tip.-

2. In a device of the class described, a torch head, a spring controlled sleeve injector mounted in and movable longitudinally of the'top portion of said torchhevad and having an inwardly directed nozzle in the top thereof, the bottom of said injector being open, said injector being also provided below the nozzle` in the' top thereof with ports or passages, means for introducing Aoxygen through said nozzle and acetylene through-said ports or passages into said injector whereby a mixture of said oxygen and acetylene is obtained in said injector, said torch head being also provided with a detachable discharge nozzle having a detachable burner tip, and means for introducing an additional supply of oxygen tothe burner tip.

3. In a device ot the class described, a torch head, oxygen and acetylene pipes con,- nected with said head and provided with means for controlling the supply of oxygen and acetylene to said head, a Amovable springcontrolled sleeve injector mounted in said head andprovided with ports or passages in the side and top thereof whereby said oxygen and acetylene pipes are placed in communication therewith and said torch head being provided with a detachable tapered discharge nozzle having internal fins or ribs.

-l. In a device of the class described, a torch head, oxygen and acetylene .pipes connected with said head and provided with means for controlling the supply of oixygen 'as my invention I have signed my name in and acetylene to sid head, said head being presence of the sbseribing Witnesses this also' provided with a tapered discharge noz' 22nd day of September, 1915.

zie 11a\ 'ng internal ns o1' ribs and said n0zl WALTER W. von ClODENWA'lTH. zie being pl'oided `with a detachable ta- Yitnessest peijed burner tlp. C. MULREAMY,

In testimony that I claim the foregoing E. THOMPSON. 

